Leakage detection mechanism for gravel pile bodies and detection vehicle

Abstract

A leak detection mechanism for gravel pile bodies, comprising a test platform (5), characterized in that a rotating ring (6) is rotatably connected within the test platform (5), a sliding sleeve (7) is articulated to the lower end of the rotating ring (6), clamping rods (8) are slidably connected within the sliding sleeve (7), a clamping wheel (9) is articulated to the inner end of the clamping rod (8), a lateral projection block (10) is fixedly connected to the right side of the rotating ring (6), an electric push rod (11) is articulated to the lower end of the test platform (5), the telescopic end on the rear of the electric push rod (11) is fixedly connected to a hinged frame (12), a reference positioning plate (13) is fixedly connected within the test platform (5), and a detection component is attached to the upper end of the test platform (5), the detection component being configured to perform the dynamic penetration test.

Description

Technical area

[0001] The present invention relates to the field of gravel pile detection, in particular to a tightness detection mechanism for gravel pile bodies and a detection vehicle. State of the art

[0002] Gravel piles are a foundation reinforcement method that uses gravel (pebbles) as the main material to form a series of dense gravel cylinders in the foundation through specific construction methods (such as vibratory compaction, dry vibration, etc.). These gravel piles can improve the bearing capacity and stability of the foundation and effectively distribute and transfer the loads of the upper structure. Gravel piles are easy to construct, cost-effective, and have little impact on the environment. Therefore, they are widely used in construction, road, and railway projects, especially in soft soil areas, collapsing loess areas, and earthquake-prone areas. As an effective foundation reinforcement method, gravel piles can significantly improve the bearing capacity and earthquake resistance of the foundation.

[0003] The leak detection of the gravel pile body is an important step to ensure the construction quality and load-bearing capacity of the gravel piles. The leak detection of the gravel pile body is typically verified through a severe dynamic penetration test. This requires a leak detection mechanism for the gravel pile body and a detection vehicle.

[0004] The traditional gravity dynamic penetration test usually involves freely uncoupling and dropping a heavy hammer from a specified height. The hammer falls freely and penetrates the interior of the gravel pile with a probe. The number of impacts required to penetrate each 10 cm is recorded. Based on the number of impacts, the density of the gravel pile can be evaluated using a formula. In practice, however, the height of the gravel piles is not the same, which requires the height to be readjusted each time the test is performed to raise the heavy hammer to the specified height. This is relatively cumbersome, and there is no guarantee that the heavy hammer will hit the center of the gravel pile, resulting in a certain deviation in the test data and making the calculation inaccurate.Therefore, a gravel pile body tightness detection mechanism and a detection vehicle are proposed to solve the above problems. Contents of the present invention

[0005] To overcome the above-mentioned deficiencies, the present invention provides a tightness detection mechanism for gravel pile bodies, which aims to improve problems of the existing art in which it cannot be guaranteed that the heavy hammer hits the center of the gravel pile.

[0006] In order to achieve the above-mentioned object, the present invention uses the following technical solution: A tightness detection mechanism for gravel pile bodies, which comprises a test platform, wherein a rotating ring is rotatably connected within the test platform, to the lower end of which a sliding sleeve is articulated, wherein clamping rods are slidably connected within the sliding sleeve, to the inside of which a clamping wheel is articulated, wherein on the right side of the rotating ring a lateral projection block is fixedly connected, wherein at the lower end of the test platform an electric push rod is articulated, the telescopic end on the back of the electric push rod is fixedly connected to an articulated frame, wherein a reference positioning plate is fixedly connected within the test platform, and at the upper end of the test platform a detection component is attached, wherein the detection component is designed to carry out the dynamic penetration test.

[0007] As a further description of the above technical solution: The detection component includes sliding columns, wherein the lower end of the sliding column is fixedly connected to the upper end of the test platform, the outer periphery of the sliding column is slidably connected to a sliding ring, the inside of the sliding ring is fixedly connected to a connecting rod, the inside of the connecting rod is fixedly connected to a fixing seat, the upper end of the fixing seat has a connecting slot, the lower end of the fixing seat is detachably connected to a heavy hammer, the upper end of the sliding column is fixedly connected to a cover plate, a lifting cylinder is arranged inside the cover plate, and the telescopic end of the lifting cylinder is provided with an electromagnet block.

[0008] As a further description of the above technical solution: An outer end of the clamp rod is hinged to the lower end of the test platform.

[0009] As a further description of the above technical solution: The upper end of the articulated frame is hinged to the lower end of the side projection block.

[0010] As a further description of the above technical solution: The heavy hammer is concentric with the reference positioning plate and the rotating ring.

[0011] As a further description of the above technical solution: The fixing seat is made of iron, and the electromagnet block is slidably connected to the inside of the connecting slot.

[0012] To overcome the above-mentioned deficiencies, the present invention provides a detection vehicle that aims to improve the need for re-height marking at each test in the existing technology.

[0013] A detection vehicle comprising a vehicle body and a gravel pile body tightness detection mechanism according to any one of claims 1 to 5, characterized in that the upper end of the vehicle body is fixedly connected to a fixing plate, a telescopic cylinder is provided on the inner wall of the upper end of the fixing plate, the telescopic end at the lower end of the telescopic cylinder is fixedly connected to a fixing block, the inside of the fixing block is fixedly connected to the outside of the test platform, and a through slot is provided on the left side of the vehicle body.

[0014] As a further description of the above technical solution: The front and rear width of the through slot is identical to the front and rear width of the test platform.

[0015] This invention has the following advantageous effects: 1. In this invention, by utilizing structures such as a test platform and a rotating ring, the electric push rod is activated, allowing multiple groups of clamping rods to be deflected inward simultaneously. When the clamping wheel touches the outer wall of the gravel pile, the gravel pile is concentric with the rotating ring, ensuring that the heavy hammer hits the center of the gravel pile when it falls, ensuring the accuracy of the test data. 2. In this invention, by utilizing mechanisms such as a telescopic cylinder and a reference positioning plate, the test platform is raised so that the reference positioning plate touches the top of the gravel pile, allowing the positioning of the reference surface to be completed quickly. This eliminates the need to repeatedly mark the height when detecting gravel piles of different heights, making it relatively easy to use. Brief description of the characters Fig. 1 is a schematic front view of a gravel pile body tightness detection mechanism and the detection vehicle according to the present invention; Fig. 2 is a schematic view of the underside of the test platform of a gravel pile body leak detection mechanism and detection vehicle according to the present invention; Fig. 3 is a schematic left side view of the test platform of the gravel pile body tightness detection mechanism and the detection vehicle according to the present invention; Fig. 4 is a schematic front view of the fixing seat of the tightness detecting mechanism for gravel pile bodies and the detecting vehicle according to the present invention. List of designations

[0016] 1. Vehicle body; 2. Fixing plate; 3. Telescopic cylinder; 4. Fixing block; 5. Test platform; 6. Rotating ring; 7. Sliding sleeve; 8. Clamping rod; 9. Clamping wheel; 10. Side projection block; 11. Electric push rod; 12. Articulating frame; 13. Reference positioning plate; 14. Through slot; 15. Sliding column; 16. Sliding ring; 17. Connecting rod; 18. Fixing seat; 19. Connecting slot; 20. Heavy hammer; 21. Cover plate; 22. Lifting cylinder; 23. Electromagnet block. Detailed examples

[0017] In the following, in conjunction with the drawings, the technical solution in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present invention.

[0018] With reference to the Fig. 1 to 3, the present invention offers an embodiment: a tightness detection mechanism for gravel pile bodies, which comprises a test platform 5. A rotating ring 6 is rotatably connected within the test platform 5. A sliding sleeve 7 is hinged to the lower end of the rotating ring 6. Four groups of sliding sleeves 7 are provided, which are evenly arranged in a ring shape on the lower part of the rotating ring 6. A clamping rod 8 is slidably connected within the sliding sleeve 7. The sliding sleeve 7 restricts the clamping rod 8 to sliding only along the inner wall of the sliding sleeve 7. An outer end of the clamping rod 8 is hinged to the lower end of the test platform 5. An inner end of the clamping rod 8 is hinged to a clamping wheel 9, which facilitates clamping. A lateral projection block 10 is fixedly connected to the right side of the rotating ring 6. An electric push rod 11 is hinged to the lower end of the test platform 5.When the electric push rod 11 is activated, the telescopic end can be moved forward and backward, and the telescopic amount can be precisely controlled. The telescopic end on the rear side of the electric push rod 11 is rigidly connected to an articulated frame 12. The upper end of the articulated frame 12 is articulated to the lower end of the side projection block 10. A reference positioning plate 13 is rigidly connected within the test platform 5. The underside of the reference positioning plate 13 is designed as a suspended reference surface. A detection component designed to perform the dynamic penetration test is provided at the upper end of the test platform 5.

[0019] Referring to the Fig. 2 to 4, a detection component is attached to the upper end of the test platform 5, which is designed to perform the dynamic penetration test. The detection component comprises four sliding columns 15 that are firmly connected to the upper end of the test platform 5 and evenly distributed at the four corners of the upper side of the test platform 5. A sliding ring 16 is slidably connected to the outer side of the sliding columns 15, wherein the sliding columns 15 restrict the sliding ring 16 to sliding up and down only along the outer wall of the sliding columns 15. A connecting rod 17 is firmly attached to the inner side of the sliding ring 16, enabling a firm connection. A fixing seat 18 is firmly attached to the inner side of the connecting rod 17, the upper end of which is provided with a connecting slot 19.A heavy hammer 20 can be detachably attached to the lower end of the fixing seat 18 to conduct various tests with different weights of the heavy hammer 20. The heavy hammer 20 is concentric with the reference positioning plate 13 and the rotating ring 6 to ensure that the heavy hammer 20 contacts the center point of the gravel pile. A cover plate 21 is fixedly attached to the upper end of the sliding columns 15. Inside the cover plate 21 is a lifting cylinder 22 that can raise the heavy hammer 20 to the desired height. An electromagnet block 23 is attached to the lower end of the lifting cylinder 22, which is slidably connected to the inside of the connecting slot 19 to fix the fixing seat 18, which is made of iron and is attracted by a magnet.

[0020] Referring to the Fig. 1 and Fig.3, the present invention offers another embodiment: a detection vehicle, the upper end of the vehicle body 1 is firmly connected to fixing plates 2. There are two groups of fixing plates 2, which are arranged symmetrically at the front and rear on the upper side of the vehicle body 1. A telescopic cylinder 3 is attached to the inner wall of the upper end of the fixing plate 2. By activating the telescopic cylinder 3, the telescopic end at the lower end of the telescopic cylinder 3 can move the fixing block 4 up and down. The telescopic end at the lower end of the telescopic cylinder 3 is firmly connected to the fixing block 4, which is attached to the outside of the test platform 5, thereby allowing the test platform 5 to be raised and lowered. On the left side of the vehicle body 1, there is a through slot 14, which facilitates the passage of gravel piles.The front and rear width of the through slot 14 is identical to the front and rear width of the test platform 5.

[0021] Working principle: To ensure that the gravel pile and the heavy hammer 20 remain concentric, the electric push rod 11 is activated. The electric push rod 11 pushes the side protrusion block 10, and the electric push rod 11 and the articulated frame 12 rotate simultaneously to ensure their relative position. At the same time, the side protrusion block 10 rotates and drives the rotating ring 6, which in turn rotates the sliding sleeve 7. At this moment, the clamp rod 8 slides within the sliding sleeve 7 and tilts inward to clamp the gravel pile. At the same time, the vehicle body 1 is moved so that all the clamp wheels 9 come into contact with the gravel pile. The gravel pile thus remains concentric with the rotating ring 6. Then, the electromagnet block 23 is activated, generating a magnetic force, and the lifting cylinder 22 is activated to push the electromagnet block 23 into the connecting slot 19 and attract the fixing seat 18.The lifting cylinder 22 raises the fixing seat 18, raising the heavy hammer 20 to the desired height. At this moment, the electromagnet block 23 is deactivated, causing the electromagnet block 23 to lose its attraction. The heavy hammer 20 then drops vertically under the action of the sliding ring 16 and the sliding column 15, creating a free fall. The heavy hammer 20 then strikes the center of the gravel pile to ensure test accuracy. If you want to conveniently adjust the reference surface, activate the telescopic cylinder 3, which raises the test platform 5. Then, move the vehicle body 1 so that the gravel pile passes through the through slot 14 into the interior of the vehicle body 1 and is located inside the rotating ring 6. Then, activate the telescopic cylinder 3 to lower the test platform 5.When the reference positioning plate 13 touches the top of the gravel pile, it is not necessary to re-mark the height when testing gravel piles of different heights.

[0022] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the invention. Although the present invention has been described in detail with reference to the above-mentioned embodiments, those skilled in the art may modify the technical solutions described in the above-mentioned embodiments or replace some technical features with equivalent features. All changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

[1] Tightness detection mechanism for gravel pile bodies comprising a test platform (5), characterized by that a rotating ring (6) is rotatably connected within the test platform (5), a sliding sleeve (7) is articulated to the lower end of the rotating ring (6), clamping rods (8) are slidably connected within the sliding sleeve (7), a clamping wheel (9) is articulated to the inner end of the clamping rod (8), a lateral projection block (10) is firmly connected to the right-hand side of the rotating ring (6), an electric push rod (11) is articulated to the lower end of the test platform (5), the telescopic end on the back of the electric push rod (11) is firmly connected to an articulated frame (12), a reference positioning plate (13) is firmly connected within the test platform (5), and a detection component is attached to the upper end of the test platform (5), the detection component being designed to carry out the dynamic penetration test. [2] Tightness detection mechanism for gravel pile bodies according to claim 1, characterized by in that the detection component comprises sliding columns (15), wherein the lower end of the sliding column (15) is fixedly connected to the upper end of the test platform (5), the outer circumference of the sliding column (15) is slidably connected to a sliding ring (16), the inside of the sliding ring (16) is fixedly connected to a connecting rod (17), the inside of the connecting rod (17) is fixedly connected to a fixing seat (18), the upper end of the fixing seat (18) has a connecting slot (19), the lower end of the fixing seat (18) is detachably connected to a heavy hammer (20), the upper end of the sliding column (15) is fixedly connected to a cover plate (21), a lifting cylinder (22) is arranged inside the cover plate (21), and the telescopic end of the lifting cylinder (22) is provided with an electromagnet block (23). [3] Tightness detection mechanism for gravel pile bodies according to claim 1, characterized by that an outer end of the clamping rod (8) is hinged to the lower end of the test platform (5). [4] Tightness detection mechanism for gravel pile bodies according to claim 1, characterized by that the upper end of the articulated frame (12) is articulated at the lower end of the lateral projection block (10). [5] Tightness detection mechanism for gravel pile bodies according to claim 2, characterized by that the heavy hammer (20) is concentric with the reference positioning plate (13) and the rotating ring (6). [6] Tightness detection mechanism for gravel pile bodies according to claim 2, characterized by that the fixing seat (18) is made of iron and the outer circumference of the electromagnet block (23) is slidably connected to the inside of the connecting slot (19). [7] Detection vehicle comprising a vehicle body (1) and a gravel pile body tightness detection mechanism according to any one of claims 1-5, characterized by that the upper end of the vehicle body (1) is firmly connected to fixing plates (2), a telescopic cylinder (3) is provided on the inner wall of the upper end of the fixing plate (2), the telescopic end at the lower end of the telescopic cylinder (3) is firmly connected to a fixing block (4), the inside of the fixing block (4) is firmly connected to the outside of the test platform (5), and a through slot (14) is provided on the left side of the vehicle body (1). [8] Detection vehicle according to claim 7, characterized by that the front and rear width of the through slot (14) is identical to the front and rear width of the test platform (5).

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